Thanks Vik...I will try that but this issue occurs even with a non-gateway call. 2 phones registered to call manager with an active call....I stop the call mgr service on sub and call drops. Any ideas what that might be? My friend Amir Safayan will be in class with you next week in San Jose.
Thanks for chiming in on this...it is a weird one. scd On Wed, Jan 19, 2011 at 10:37 AM, Vik Malhi <[email protected]> wrote: > I think you might be running into one of 2 issues I have experienced. > > (1) is binding mgcp control packets to a Loopback interface or SVI. Try > removing the "mgcp bind" commands no mgcp/mgcp and then test. The backhaul > link that the gw tries to establish with the redundant host might not be > invoked due to this "bug". > > (2) "no mgcp timer receive-rtcp" on the mgcp gw- the gw might still be > running this timer for packets from the sub (which is down) and after 50s > this timer could cause the call to drop. > > -- > Vik Malhi – CCIE #13890 > Managing Partner / Instructor - IPexpert, Inc. > Mailto: *[email protected] > *Telephone: +1.810.326.1444 ext 420 > Fax: +1.810.454.0130 > Live Assistance, Please visit: www.ipexpert.com/chat <* > http://www.ipexpert.com/chat*> > > IPexpert is a premier provider of Self-Study Workbooks, Video on Demand, > Audio Tools, Online Hardware Rental and Classroom Training for the Cisco > CCIE (R&S, Voice, Wireless, Security & Service Provider) certification(s) > with training locations throughout the United States, Europe, South Asia and > Australia. Be sure to visit our online communities at > www.ipexpert.com/communities <*http://www.ipexpert.com/communities*> and > our public website at www.ipexpert.com <*http://www.ipexpert.com/*> > > From: CCIE Voice <[email protected]> > Date: Wed, 19 Jan 2011 09:18:08 -0700 > To: OSL Group <[email protected]> > Subject: [OSL | CCIE_Voice] call preservation issue > > Hello All: > > I have a scenario which I discovered while trying to troubleshoot mgcp call > preservation and noticed that calls were NOT being preserved. All the MGCP > gateway configs looked correct. I then noticed that even IP phone - to - IP > Phone calls were being dropped. > I am simulating subscriber failure by manually shutting the call manager > service on the subscriber. > As soon as I do this, all IPphone-to-IPphone calls drop (as well as calls > to pstn via MGCP gateway) > Both pub and sub have call manager service running and phones can register > and process calls when registered to either server. There is a call manager > group in use by all phones listing sub first then pub. Phones do show > primary & secondary call servers in device/UCM Config on the phones. > > Stopping call manager service on sub kills all calls even between IP > phones. > > I am hoping that someone may have experienced something similar. A friend > of mine seemed to recall a bug that was found and discussed in this forum a > year or so ago but I could not find anything. > > Thanks in advance! > > scd > _______________________________________________ For more information > regarding industry leading CCIE Lab training, please visit > www.ipexpert.com >
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